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V4L/DVB (10713): zoran: if reqbufs is called with count == 0, do a streamoff. 

count == 0 has a special meaning, implement this.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2009-02-18 17:15:46 -03:00 committed by Mauro Carvalho Chehab
parent 5ca75b00ff
commit 84c1b09495
1 changed files with 7 additions and 3 deletions
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10
drivers/media/video/zoran/zoran_driver.c
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@ -2493,6 +2493,8 @@ static int zoran_overlay(struct file *file, void *__fh, unsigned int on)
return res;
}
static int zoran_streamoff(struct file *file, void *__fh, enum v4l2_buf_type type);
static int zoran_reqbufs(struct file *file, void *__fh, struct v4l2_requestbuffers *req)
{
struct zoran_fh *fh = __fh;
@ -2500,17 +2502,19 @@ static int zoran_reqbufs(struct file *file, void *__fh, struct v4l2_requestbuffe
int res = 0;
if (req->memory != V4L2_MEMORY_MMAP) {
dprintk(1,
dprintk(2,
KERN_ERR
"%s: only MEMORY_MMAP capture is supported, not %d\n",
ZR_DEVNAME(zr), req->memory);
return -EINVAL;
}
mutex_lock(&zr->resource_lock);
if (req->count == 0)
return zoran_streamoff(file, fh, req->type);
mutex_lock(&zr->resource_lock);
if (fh->v4l_buffers.allocated || fh->jpg_buffers.allocated) {
dprintk(1,
dprintk(2,
KERN_ERR
"%s: VIDIOC_REQBUFS - buffers already allocated\n",
ZR_DEVNAME(zr));